In rats, a differential signal was used for evoking an optical image in the barrel-field zone which represented a difference between cortical images during the control and the stimulation periods. After a subtraction of averaged sequences of frames, an image of spots reflecting a probable location of activated groups of neurones was obtained. Natural low… (More)
Both the action and synaptic potentials were recorded in cortical neurons in vivo in the rat pups. A new recording technique needed no special vibroisolation and provided a stable recording with a satisfactory signal/noise ratio.
The specific neurotropic action of rimantadine was demonstrated in mollusk neuron experiments. No specific neurotropic activity of dejtiphorin was found. In combined application, the latter blocked the neurotropic effect of rimantadine. In experiments in white mice and rats, high doses of both drugs decreased the emotional and motor activity of the animals.… (More)
The neurones causing the inhibitory postsynaptic potentials (IPSP) with duration 150-200 ms in the myocardium have been identified in the visceral ganglion of Helix pomatia. The neurones are characterized by the high frequency of discharges (2-3 c/s) which changes modulate the heart frequency. IPSP is blocked by d-tubocurarine in the concentration… (More)
Cardioregulating neurones in the right parietal and visceral ganglia of the snail evoke postsynaptic potentials of various duration, amplitude and polarity in the auricular and ventricular myocardium. Inhibitory neurones with a marked background activity (1-2 imp/s) evoke IPSPs with a duration of 150-200 msec and a latent period of 160-220 msec in the… (More)
Most neurons of suboesophageal ganglia are not sensitive to hypoxia (pO2 2-4 mm Hg), the depolarization reaches 4 mV approximately in 5% of investigated cells. Only 2 cells where the hypoxia caused a more significant reaction were identified. In silent neuron V2 the membrane potential decreased by 8-11 mV under hypoxia; in neuron PPa34 a sharp increment of… (More)